:root {
  --bg: #050506;
  --fg: #e8e6e1;
  --dim: #8a8780;
  --faint: #4a4844;
  --line: rgba(232, 230, 225, 0.09);
  --serif: "Songti SC", "STSong", "SimSun", "Noto Serif CJK SC", serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--serif);
  -webkit-font-smoothing: antialiased;
}

/* ---------- hero ---------- */

.hero {
  position: relative;
  height: 100vh;
  min-height: 520px;
  overflow: hidden;
}

.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.hero-brand {
  position: absolute;
  top: 34px;
  left: 40px;
  font-size: 15px;
  letter-spacing: 0.34em;
  color: var(--dim);
}

.hero-scroll {
  position: absolute;
  bottom: 38px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 12px;
  letter-spacing: 0.4em;
  color: var(--faint);
  animation: breathe 3.6s ease-in-out infinite;
}

@keyframes breathe {
  0%, 100% { opacity: 0.3; }
  50%      { opacity: 0.85; }
}

/* ---------- layout ---------- */

.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 110px 28px 40px;
}

.feed-title {
  margin: 0 0 44px;
  font-size: 15px;
  font-weight: normal;
  letter-spacing: 0.34em;
  color: var(--dim);
}

.feed { display: flex; flex-direction: column; }

/* ---------- content card ---------- */

.card {
  padding: 34px 0;
  border-top: 1px solid var(--line);
}

.card:last-child { border-bottom: 1px solid var(--line); }

.card-meta {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--faint);
  margin-bottom: 14px;
}

.card-title {
  margin: 0 0 12px;
  font-size: 21px;
  font-weight: normal;
  line-height: 1.5;
  letter-spacing: 0.03em;
}

.card-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.95;
  color: var(--dim);
}

/* ---------- ad card ---------- */

.ad-card {
  padding: 30px 0 34px;
  border-top: 1px solid var(--line);
}

.ad-flag {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
}

.ad-flag-text {
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--faint);
  border: 1px solid var(--line);
  padding: 2px 7px;
}

.ad-logo { height: 13px; width: auto; opacity: 0.65; }

.ad-media { margin-bottom: 18px; }

.ad-video { width: 100%; aspect-ratio: 16 / 9; background: #0d0d0f; }
.ad-video video { width: 100%; height: 100%; display: block; object-fit: contain; }

.ad-bigimg { width: 100%; display: block; background: #0d0d0f; }

.ad-3img { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; }
.ad-3img img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; display: block; background: #0d0d0f; }

.ad-title {
  margin: 0 0 10px;
  font-size: 20px;
  font-weight: normal;
  line-height: 1.5;
  cursor: pointer;
}

.ad-desc {
  margin: 0 0 20px;
  font-size: 14px;
  line-height: 1.9;
  color: var(--dim);
}

.ad-foot {
  display: flex;
  align-items: center;
  gap: 11px;
}

.ad-icon { width: 26px; height: 26px; border-radius: 4px; object-fit: cover; }

.ad-cta {
  margin-left: auto;
  font-family: var(--serif);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--fg);
  background: transparent;
  border: 1px solid rgba(232, 230, 225, 0.28);
  padding: 8px 20px;
  cursor: pointer;
  transition: background 0.25s, border-color 0.25s;
}

.ad-cta:hover {
  background: rgba(232, 230, 225, 0.07);
  border-color: rgba(232, 230, 225, 0.5);
}

.is-hidden { display: none !important; }

/* ---------- footer ---------- */

.foot {
  max-width: 760px;
  margin: 0 auto;
  padding: 70px 28px 60px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--faint);
  display: flex;
  gap: 22px;
}

/* ---------- debug panel ---------- */

.dbg {
  position: fixed;
  right: 16px;
  bottom: 16px;
  width: 396px;
  max-height: 74vh;
  background: rgba(10, 10, 12, 0.94);
  border: 1px solid rgba(232, 230, 225, 0.16);
  color: #d6d4cf;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
  line-height: 1.65;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(8px);
}

.dbg-head {
  display: flex;
  align-items: center;
  padding: 8px 11px;
  border-bottom: 1px solid rgba(232, 230, 225, 0.13);
  letter-spacing: 0.1em;
  flex: none;
}

.dbg-min {
  margin-left: auto;
  background: none;
  border: none;
  color: #d6d4cf;
  cursor: pointer;
  font-family: inherit;
  font-size: 13px;
  padding: 0 4px;
}

.dbg-body { overflow-y: auto; padding: 4px 0; }
.dbg.min .dbg-body, .dbg.min .dbg-actions { display: none; }

.dbg-sec { padding: 7px 11px; border-bottom: 1px solid rgba(232, 230, 225, 0.07); }
.dbg-sec:last-child { border-bottom: none; }

.dbg-sec-t { color: #6f6c66; letter-spacing: 0.14em; margin-bottom: 5px; }

.dbg-row { display: flex; gap: 8px; word-break: break-all; }
.dbg-k { color: #6f6c66; flex: none; min-width: 116px; }
.dbg-v { flex: 1; }

.dbg-v.ok   { color: #7fbf8a; }
.dbg-v.bad  { color: #d97c74; }
.dbg-v.warn { color: #d3b264; }

.dbg-log { white-space: pre-wrap; word-break: break-all; margin: 0; font-size: 10.5px; }

.dbg-actions {
  display: flex;
  gap: 6px;
  padding: 8px 11px;
  border-top: 1px solid rgba(232, 230, 225, 0.13);
  flex: none;
}

.dbg-btn {
  flex: 1;
  background: rgba(232, 230, 225, 0.07);
  border: 1px solid rgba(232, 230, 225, 0.18);
  color: #d6d4cf;
  font-family: inherit;
  font-size: 11px;
  padding: 6px 0;
  cursor: pointer;
}

.dbg-btn:hover { background: rgba(232, 230, 225, 0.14); }

/* ---------- responsive ---------- */

@media (max-width: 620px) {
  .hero-brand { top: 24px; left: 22px; }
  .wrap { padding-top: 70px; }
  .card-title, .ad-title { font-size: 18px; }
  .dbg { width: auto; left: 12px; right: 12px; }
}